There are three egos presently being sold that I know of. I have tried all three and there are some slight differences between the three that you might like to know about.
The janty ego. two
batteries, one atomizer, one cone and the fast charger (1.5-2 hours to charge the battery).
The totally wicked tornado. two batteries, two atomizers, one cone and a slow charger (4-5 hours to charge the battery). This ego also requires a adapter that is included and fits between the charger and the battery.
The Joye ego. two batteries, two atomizers, two cones (two complete cigarettes), the fast charger (1.5-2 hours to charge the battery) and a 510 to 901 adapter.
It appears the Joye ego is the best value for the money.
On a side note, I have been smoking the 510 for 11 months now and it was my favorite cigarette. I now use the ego and have not touched the 510 in over 6 weeks.
This is an amazing e-cigarette reguardless of which one you decide to purchase. It uses all my 510 atomizers and cartridges, Increased vapor production and I am getting 8-12 hours out of a battery.
This ego battery has really improved the e-cigarette experience for me now that i no longer have to switch 510 batteries every three hours...Mike